EP1555975B1 - Rigid dressing - Google Patents

Abstract

A wound dressing for a body member including a sealed casing formed of a flexible, air impermeable material configured and dimensioned to accommodate and enclose a body member, a compactible filler material disposed in the interior of the casing, and a valve communicating with the interior of the casing for evacuating air therefrom, whereupon the filler material interengages to combine with the casing to form a rigid structure conforming to a body member.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention
• The present invention pertains to a wound dressing, and more particularly to a rigid dressing for a residual limb immediately after surgical amputation of a limb.
2. Background of the Invention
• A wound dressing according to the preamble of claim 1 is known fromDE-U-9 408 537.
• Postoperative treatment of a residual limb after surgical amputation is conducted to ensure primary wound healing and pain control, reduce edema and assist in proper residual limb formation. Conventional postoperative treatment involves soft dressings of sterile gauze and padding followed by a compressive bandage of elastic wrap. These dressings suffer from the disadvantages in that the elastic wrap can generate high pressure on the residual limb and the dressing is cumbersome to remove when inspection of the wound is required.
• An alternative technique is to provide a rigid dressing wherein a nonremovable rigid plaster dressing is applied to the residual limb immediately after limb removal. Although the plaster dressing immobilizes the residual limb, it suffers from several significant disadvantages. Significant disadvantages to this postoperative dressing include the fact that it requires substantial time and skill to apply the plaster dressing. Another disadvantage is that inspection of the residual limb cannot be conducted without breaking and removing the plaster casting from the limb.
• The present invention overcomes the disadvantages of the prior art by providing a rigid wound dressing which is easily configured to enclose a residual limb immediately after surgical amputation while firmly securing the residual limb and permitting easy inspection of the residual limb without destruction of the dressing.
SUMMARY OF THE INVENTION
• According to one embodiment of the present invention, there is provided a sealed casing containing an compactable filler material disposed in the interior thereof, with the casing formed of a flexible, air impermeable material that is configured and dimensioned to accommodate a body member. The invention includes an appropriate arrangement permitting communication with the interior of the casing for evacuating air therefrom, whereupon the filler material interengages, in the aggregate, to form a rigid structure conforming to the body member. The sealed casing is divided into portions which are connected to one another but which can be flexed at predetermined points or areas relative to a central portion of the wound dressing after interengagement of the filler material. A pad is connected to the central portion to accommodate a distal end of a body member.
• Significant aspects and features of the present invention include a wound dressing capable of being formed into a rigid structure which enables for ease of application to and inspection of the body member. Particularly, the flexible nature and inherent shape of the casing permit portions of the rigid dressing to be flexed and therefore removed from the body member for inspection of the body member without destruction of the dressing.
• Another significant aspect and feature of the present invention is a wound dressing which provides for rigid securement of a body member which is easily and quickly performed while providing comfort and safety to the body member.
• Although described in the context of securing a residual limb immediately after surgical amputation of a limb, the present invention is not intended to be limited to the securement of residual limbs. Instead, the present invention is directed to any application where securement and inspection of a body member is necessitated in a simple and quick fashion.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is a plan view of the sealed casing of the present invention.
• FIG. 1A is a cross-sectional view taken along line I-I inFIG. 1.
• FIG. 2 is a plan view showing the interior of the sealed casing.
• FIG. 3 is a perspective view showing the sealed casing.
• FIG. 4 is a perspective view showing the wound dressing in an extended configuration.
• FIG. 5 is a perspective view showing a body member positioned along the wound dressing.
• FIG. 6 is a perspective view showing the wound dressing connected to a vacuum device and folded over portions of the body member prior to evacuation of air from the interior of the sealed casing.
• FIG. 7 is a perspective view showing the wound dressing after evacuation of air from the interior of the sealed casing.
• FIG. 8 is a perspective view showing the wound dressing opened for inspection of the body member.
DETAILED DESCRIPTION OF THE INVENTION
• FIG. 1 illustrates a plan view of a sealedcasing 10 made of a flexible, air impermeable sheet material such as a polymer coated textile or polymer film and defining aninterior volume 11. Thecasing 10 may be formed of twoadjoining sheets 10a and 10b, for example, as shown inFIG. 1a, and is divided into opposing elongatedlongitudinal portions 24, 24', opposing centrallateral portions 26, 26' and acentral portion 28 positioned between thelongitudinal portions 24, 24' andlateral portions 26, 26'. Avalve 16 is positioned along one of thelongitudinal portions 24, 24' and arranged to communicate with the interior of the casing. Any device or arrangement suitable for providing sealable access to the interior of the casing could be used in place of thevalve 16.
• Disposed in the interior of thecasing 10 is afiller material 17 that interengages, in the aggregate, to form thecasing 10 into a rigid structure conforming to a body member when air is evacuated from the sealedcasing 10 via thevalve 16. The filler material 17 (FIG. 1 a) includes particles within a predetermined size range which is compressible or incompressible when compacted. The particles may include beads, grains, powder or organic material that can be arranged to interengage upon evacuation of air from the sealed vacuum. Specific types offiller material 17 may include thermoplastic and thermoset materials, both foam and solid, and sand.
• FIG. 2 illustrates the interior of thecasing 10 without thefiller material 17 and shows thedivision 12 of thelongitudinal portions 24, 24' from thelateral portions 26, 26' and thecentral portion 28. Thedivision 12 may be a crease formed by thecasing 10 or a webbing separating the portions of thecasing 10. In effect, thedivision 12 can consist of any arrangement that permits thecasing 10 to be divided into portions which are connected to one another but can be flexed around acentral portion 28 both before and after interengagement of thefiller material 17.
• Thecasing 10 includes apad 14 positioned at thecentral portion 28 and is either secured onto or integrated into thecasing 10. Thepad 14 is configured and dimensioned to accommodate the distal end of a body member. Thepad 14 can include hook and loop fasteners or other fastening elements (not shown) disposed on one side thereof that correspond to hook and loop fasteners or fastening elements (not shown) positioned on thecentral portion 28 of thecasing 10 so that thepad 14 can be removed and replaced if necessary.
• FIG. 3 is a perspective view of thecasing 10 withstraps 18 connected tolongitudinal portion 24. Thestraps 18 include connection elements (not shown) disposed at the ends thereof such as hook and loop patches, buckles or snap elements which connect to opposing ends ofrespective straps 18.
• While the illustrated shape of thecasing 10 is not to be construed as limiting of the present invention, the gist of the present invention is a sealed casing containing afiller material 17 that is configured and dimensioned to easily enclose a body member. For example, thecasing 10 may comprise of the shape of a circle or a rectangle that include foldable portions to enclose a body member.
• A method for applying the wound dressing to a body member is exemplified inFIGS. 4-6. FIG. 4 shows a first step wherein thecasing 10 is placed along a substantially flat surface in an extended configuration so that thefiller material 17 is evenly distributed in thecasing 10.FIG. 5 shows the next step wherein abody member 60 is positioned ontolongitudinal portion 24.FIG. 6 shows the following step wherein thelongitudinal portion 24' is folded to enclose thebody member 60. Also shown islateral portion 26 which is tucked underlongitudinal portion 24' to also enclose thebody member 60. Although not shown, it follows thatlateral portion 26' is also tucked under the foldedlongitudinal portion 24'. Thestraps 18 are wrapped aroundlongitudinal portions 24, 24' to thereby secure thecasing 10 to thebody member 60.
• The next step is also shown inFIG.6 which is to connect avacuum device 20 to thevalve 16 via atube 22.Vacuum device 20 is used to perform the step of evacuating air from the interior of thecasing 10.
• FIG. 7 shows arigid casing 10 after air has been evacuated from the interior of thecasing 10 and thefiller material 17 has interengaged. Thecasing 10 conforms to the shape fo thebody member 60.
• FIG. 8 shows therigid casing 10 opened for inspection of thebody member 60 whereby thestraps 18 are unsecured andlongitudinal portion 24' andlateral portions 26, 26' are folded away from thebody member 60.
• The specific embodiments of the invention described herein are intended to be illustrative only and various modifications thereto may be envisioned and implemented by a person skilled in the art without departing from the spirit and scope of the invention which is defined in the claims that follow.

Claims (7)

1. A wound dressing for a body member, comprising:

   a sealed casing (10) formed of a flexible, air impermeable material configured and dimensioned to accommodate and enclose a body member;

   an compactable filler material (11) disposed in the interior of said casing; and

   a valve (16) communicating with the interior of the casing (10) for evacuating air therefrom, whereupon the filler material (11) interengages, in the aggregate, to form a rigid structure in combination with the casing conforming to a body member,

   wherein the casing (10) includes opposed first and second elongated longitudinal portions (24,24') each having first and second ends,characterised by opposed first and second central lateral portions (26,26') each having first and second ends, a central portion (28) located between said longitudinal portions and said lateral portions and a division (12) of the longitudinal portions (24,24') from the central lateral portions (26,26') and the central portion (28), the division permitting the casing (10) to be divided into portions connected to one another but being flexible around the central portion (28), no as to fold said longitudinal portions and lateral portions (24,24',26,26') near said central portion (28) and conform to a body member in the folded configuration.
2. The wound dressing according to claim 1, further comprising a pad (14) connected to said central portion (28), and configured and dimensioned to accommodate a distal end of a body member.
3. The wound dressing according to claim 1 or 2, further comprising at least one strap (18) connected to one of said longitudinal portions (24,24') and extending lateral relative thereto, said strap having connection elements positioned at the ends thereof configured to connect to one another.
4. The wound dressing according to any of claims 1 to 3, wherein the filler material (11) is selected from the group consisting of polymer beads, polymer powder and sand.
5. The wound dressing according to claim any of claims 1 to 4, wherein the longitudinal portions (24,24') are substantially greater in length than the lateral portions (26,26').
6. A method for applying the wound dressing of any of claims 1 to 5 to a body member, comprising the steps of:

   placing the wound dressing along a substantially flat surface in an extended configuration wherein the longitudinal, lateral and central portions (24,24',26,26',28) extend along said flat surface to thereby evenly distribute the filler material (11) disposed in the casing (10);

   positioning the body member onto a first one of the longitudinal portions (24,24');

   folding the lateral portions (26,26') towards the body member and central portion (11);

   folding a second one of the longitudinal portions (24,24') over the first longitudinal portion;

   connecting a vacuum device to the valve (16); and

   evacuating air from the interior of the casing (10) while maintaining the body member in a predetermined position to cause the filler material (11) to interengage to form a rigid structure conforming to the body member.
7. The method according to claim 6 along with claim 3, further comprising the steps of wrapping the at least one strap (18) around the longitudinal portions (24,24') and connecting the connection elements to one another to secure the wound dressing to the body member.

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